TESTING/EIG/zckcsd.f(3)

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version 3.12.1 · 2 versions
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✨ TESTING/EIG/zckcsd.f(3) ✨

okay bestie, welcome to the Library Functions Manual page for TESTING/EIG/zckcsd.f — the title and manual name are folded right in here, and this file is lowkey iconic. it's giving “testing routine with main character energy” 💅

💖 NAME 💖

TESTING/EIG/zckcsd.f — that's the whole name, no cap 🎀

✨ SYNOPSIS ✨

🎀 Functions/Subroutines 🎀

  • subroutine zckcsd (nm, mval, pval, qval, nmats, iseed, thresh, mmax, x, xf, u1, u2, v1t, v2t, theta, iwork, work, rwork, nin, nout, info) — ZCKCSD 🔥
  • subroutine zlacsg (m, p, q, theta, iseed, x, ldx, work) — zlacsg 🦋

🌸 Function/Subroutine Documentation 🌸

🦋 subroutine zckcsd 🦋

subroutine zckcsd (integer nm, integer, dimension( * ) mval, integer,
    dimension( * ) pval, integer, dimension( * ) qval, integer nmats,
    integer, dimension( 4 ) iseed, double precision thresh, integer mmax,
    complex*16, dimension( * ) x, complex*16, dimension( * ) xf, complex*16,
    dimension( * ) u1, complex*16, dimension( * ) u2, complex*16, dimension(
    * ) v1t, complex*16, dimension( * ) v2t, double precision, dimension( *
    ) theta, integer, dimension( * ) iwork, complex*16, dimension( * ) work,
    double precision, dimension( * ) rwork, integer nin, integer nout,
    integer info)

ZCKCSD — yes, the name again, we love a consistent queen 👑

🎀 Purpose 🎀

ZCKCSD tests ZUNCSD: the CSD for an M-by-M unitary matrix X partitioned as

[ X11 X12; X21 X22 ]

X11 is P-by-Q. periodt 💜

💅 Parameters 💅

  • NM — NM is INTEGER. Bestie, this is the number of values of M contained in the vector MVAL.
  • MVAL — MVAL is INTEGER array, dimension (NM). These are the values of the matrix row dimension M.
  • PVAL — PVAL is INTEGER array, dimension (NM). These are the values of the matrix row dimension P.
  • QVAL — QVAL is INTEGER array, dimension (NM). These are the values of the matrix column dimension Q.
  • NMATS — NMATS is INTEGER. It's the number of matrix types to be tested for each combination of matrix dimensions. If NMATS >= NTYPES (the maximum number of matrix types), then all the different types are generated for testing. If NMATS < NTYPES, another input line is read to get the numbers of the matrix types to be used. iykyk 🫶
  • ISEED — ISEED is INTEGER array, dimension (4). On entry, this is the seed of the random number generator. The array elements should be between 0 and 4095, otherwise they will be reduced mod 4096, and ISEED(4) must be odd. On exit, it's the next seed in the random number sequence after all the test matrices have been generated. not me keeping track of the seed 💀
  • THRESH — THRESH is DOUBLE PRECISION. This is the threshold value for the test ratios. A result is included in the output file if RESULT >= THRESH. To have every test ratio printed, use THRESH = 0. no skipped tea ☕
  • MMAX — MMAX is INTEGER. The maximum value permitted for M, used in dimensioning the work arrays. iconic dimensioning behavior ✨
  • X — X is COMPLEX*16 array, dimension (MMAX*MMAX).
  • XF — XF is COMPLEX*16 array, dimension (MMAX*MMAX).
  • U1 — U1 is COMPLEX*16 array, dimension (MMAX*MMAX).
  • U2 — U2 is COMPLEX*16 array, dimension (MMAX*MMAX).
  • V1T — V1T is COMPLEX*16 array, dimension (MMAX*MMAX).
  • V2T — V2T is COMPLEX*16 array, dimension (MMAX*MMAX).
  • THETA — THETA is DOUBLE PRECISION array, dimension (MMAX).
  • IWORK — IWORK is INTEGER array, dimension (MMAX).
  • WORK — WORK is COMPLEX*16 array.
  • RWORK — RWORK is DOUBLE PRECISION array.
  • NIN — NIN is INTEGER. The unit number for input.
  • NOUT — NOUT is INTEGER. The unit number for output.
  • INFO — INFO is INTEGER.
    • = 0 : successful exit 🎉
    • > 0 : If ZLAROR returns an error code, the absolute value of it is returned.

👑 Author 👑

  • Univ. of Tennessee
  • Univ. of California Berkeley
  • Univ. of Colorado Denver
  • NAG Ltd.

Definition at line 181 of file zckcsd.f. 💖

🧚 subroutine zlacsg 🧚

subroutine zlacsg (integer m, integer p, integer q, double precision,
    dimension( * ) theta, integer, dimension( 4 ) iseed, complex*16,
    dimension( ldx, * ) x, integer ldx, complex*16, dimension( * ) work)

Definition at line 352 of file zckcsd.f. 🦋

👑 Author 👑

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okay that's the whole page, mwah 💋 — source/version energy: LAPACK Version 3.12.0, page TESTING/EIG/zckcsd.f(3) 🌈👑

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